Data and Cybersecurity Due Diligence When Buying an Accounting Practice
Data and Cybersecurity Due Diligence tests whether an accounting practice’s client records are complete, appropriately protected and capable of supporting work under your ownership.
An accounting practice can look orderly from the outside: cloud software, tidy reports and a team that knows its clients.
The more revealing question is whether someone new could find the information, understand the work and keep services running without the vendor filling every gap.
For an Australian buyer, records are part of the operating business. Weaknesses can affect client service, staff workload and transition costs. This review connects the condition of the data with the assumptions behind the purchase.
The short answer
File completeness matters as much as having access to the software.
Security assurances need evidence about the practice’s actual arrangements.
A backup is more useful when recovery has been demonstrated.
Confidentiality, appropriate disclosure and the eventual transfer require separate consideration.
Material findings belong in the acquisition decision and funding assumptions.
What should Data and Cybersecurity Due Diligence cover?
Three questions sit at the centre of the review. Are the records usable? Are they appropriately protected? Can the buyer take operational control through an agreed process?
An accounting practice may perform well in one area and poorly in data and cybersecurity.
The information may also be spread more widely than the sale presentation suggests. Working papers could sit in document software, correspondence in email, and the latest explanation of an unresolved matter in someone’s personal notes. Knowing the locations helps explain what the business depends on.
The early information request establishes a starting point. What Client Information Should You Request When Buying an Accounting Practice? explains that screening stage. Due diligence goes further, testing whether the records behind the summaries can support continued work.
How can buyers review records appropriately?
The OAIC’s guidance on selling a business explains that privacy obligations can apply during due diligence. It recommends de-identified information where possible and careful consideration before personal information is disclosed.
For the buyer, this means agreeing a review process before requesting identifiable client files. Aggregated reports and appropriately redacted samples may answer some questions without exposing the underlying identities. The solicitor can assess what information may be provided and how.
An NDA helps govern confidentiality, but its existence should not be treated as permission to disclose every record. The review arrangements also need to address who can access material, its permitted purpose and what happens to copies if the transaction stops.
NDA vs Exclusivity When Buying an Accounting Practice explains why those commercial protections address different questions. A controlled review can protect sensitive information while still allowing the buyer’s advisers to test important acquisition assumptions.
What makes a client file usable?
A folder full of documents is not necessarily a usable file. Its value depends on whether an authorised person can understand the engagement, locate the current work and identify what remains outstanding. That becomes particularly important when the vendor leaves.
A representative review, agreed with the vendor and advisers, can explore different services, periods and team members. The best-presented example may show what the practice can produce; a broader sample helps reveal how consistently it does so.
Missing documents, unclear versions or undocumented queries can create extra work. The buyer needs to understand which engagements are affected and what effort may be required. A promise that the vendor knows where everything is offers little comfort if that knowledge never reaches the buyer.
What does a security review add?
ASD’s Australian Cyber Security Centre small business guidance provides a useful starting point on multi-factor authentication, software updates and backups. The buyer’s technology adviser can assess how those measures operate in this particular practice.
The review is about evidence, not the number of reassuring answers on a questionnaire. Account permissions, remote access arrangements and responsibility for security changes can help show who controls the environment. Shared accounts or access retained by former staff deserve explanation.
Known incidents and unresolved concerns also matter. A past incident does not explain the present position by itself; the response, remaining weaknesses and evidence of remediation help establish what the buyer may inherit. Technical testing requires an agreed scope and the necessary authority.
Useful findings explain the commercial consequence. A report should help the buyer distinguish an improvement that can be planned after settlement from a weakness that threatens continuity or calls for action before proceeding.
Can the practice recover its records?
Backup reports can show that a process ran. Recovery evidence answers a different question: could the business use the information again? ACSC guidance on regular backups recommends testing restoration to establish that important data and systems can be recovered.
For an acquisition, the scope matters. Documents may be covered while email or a particular application is not. A successful test may relate to one folder rather than the whole environment. Understanding what was restored helps the buyer interpret the evidence.
A cloud subscription should not be accepted as proof of an adequate recovery arrangement. The supplier’s services and the practice’s responsibilities need to be understood. The buyer also needs confidence that the relevant arrangements will remain available after ownership changes.
Why does the transfer plan matter?
Day-one continuity and a later migration are separate projects. A buyer may eventually replace software, yet still need the existing records and systems to support client deadlines immediately after settlement. Trying to change everything at once can complicate the transition.
A workable plan explains which records and accounts are involved, the required approvals and how successful access will be confirmed. Administrator and recovery control need particular attention where the current arrangements depend on the vendor’s personal account.
Legal and technology advisers bring different expertise to that process. Together, they can help assess appropriate transfer arrangements, retained copies, provider access and a contingency for delays. These details make the handover promise more concrete.
The transfer plan also helps expose dependencies that a software list can miss. If only one employee understands the filing conventions, or one external provider holds essential access, the buyer has a people issue as well as a technology issue. Understanding those dependencies gives the proposed handover a clearer purpose: transferring the knowledge and control needed to keep the practice working. It also helps explain where extra support may be required during the change of ownership.
Illustrative example: when the files change the forecast
Imagine a buyer planning to take over a practice with its existing team and software. The forecast assumes normal service delivery from settlement.
During an agreed review, several sampled files contain unresolved queries that appear only in the vendor’s email.
A specialist also finds that backup restoration has not been demonstrated. The issue is no longer simply whether the practice uses modern software. The buyer needs to understand the effort to organise the outstanding work and establish a recovery arrangement.
In this hypothetical situation, that work may require vendor assistance, external support and additional staff time. The buyer revises the cost assumptions and discusses completion responsibilities and timing with advisers. Outcomes vary; the example illustrates how evidence can change the proposed acquisition.
Frequently asked questions
Does an NDA allow access to every client file?
It should not be assumed to do so. Confidentiality and the appropriate handling of personal information are separate considerations. The review process needs legal assessment.
Are cloud records automatically secure?
Cloud software alone does not establish the practice’s security position. Access settings, recovery arrangements and responsibilities still need review.
Is a full technical audit always necessary?
The appropriate scope depends on the practice, its systems, history and the buyer’s operating plan. A qualified adviser can explain what further investigation would add.
Can these findings affect acquisition finance?
Yes. Remediation costs, disruption or revised timing may change funding assumptions. Material changes should be discussed with the finance adviser before relying on an earlier assessment.
Bring the findings into the purchase decision
The useful result is a clear account of what has been verified, what remains uncertain and what needs to happen next. Data weaknesses should have a practical response, whether further evidence, remediation or changes to the proposed transaction.
Considering Buying an Accounting Practice?
Our team can help you understand how material data and technology findings may affect your acquisition funding requirement.
General information only. This article does not constitute financial, credit, legal, tax, accounting, compliance or valuation advice. Finance is subject to lender approval, eligibility criteria, terms, fees and conditions. Consider obtaining independent professional advice for your circumstances before acting.
